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June 19th, 2026 :: 12:17 pm CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated June 19th at 10:54 am 
Temperature:73°F Dew Point:55°F
Barometer:30.04 inHg Wind:N 17 Mph
Humidity:53.3% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jun 19th
Saturday
Jun 20th
Sunday
Jun 21st
Monday
Jun 22nd
Tuesday
Jun 23rd
Mostly Sunny Mostly Sunny Rain Mix of Cloud and Sun Mostly Sunny
75°F
77°F
60°F
67°F
60°F
70°F
59°F
72°F
58°F
 
 Decatur Detailed Weather Forecast  
 
Friday, June 19th, 2026
Afternoon Temperature: 75°F
Mostly sunny. Windy at times.
Evening Temperature: 70°F
Mostly clear. Slight chance of a thunderstorm.
Saturday, June 20th, 2026
Overnight Temperature: 62°F
A mix of clear and cloudy skies.
Morning Temperature: 66°F
Mostly sunny.
Afternoon Temperature: 77°F
Sunny. Windy at times.
Evening Temperature: 70°F
Mostly clear. Slight chance of a thunderstorm.
Sunday, June 21st, 2026
Overnight Temperature: 64°F
Mostly cloudy.
Morning Temperature: 64°F
Cloudy with a chance of showers. Windy at times.
Afternoon Temperature: 66°F
Cloudy with periods of rain. Windy.
Evening Temperature: 60°F
A mix of cloudy and clear skies with a few showers. Windy.
Monday, June 22nd, 2026
Overnight Temperature: 60°F
A mix of cloudy and clear skies. Windy at times.
Morning Temperature: 62°F
A mix of cloud and sun. Windy at times.
Afternoon Temperature: 69°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 66°F
A mix of cloudy and clear skies. Windy at times.
Tuesday, June 23rd, 2026
Overnight Temperature: 59°F
A mix of cloudy and clear skies.
Morning Temperature: 62°F
Mostly sunny.
Afternoon Temperature: 72°F
Mostly sunny.
Evening Temperature: 66°F
Clear.
Wednesday, June 24th, 2026
Overnight Temperature: 59°F
Clear.
Morning Temperature: 66°F
Mostly sunny with a chance of showers. Slight chance of a thunderstorm.
Afternoon Temperature: 75°F
Sunny with a chance of showers. Windy at times.
Evening Temperature: 67°F
Mostly clear. Slight chance of a thunderstorm.
Thursday, June 25th, 2026
Overnight Temperature: 59°F
Clear.
Morning Temperature: 67°F
Mostly sunny.
Afternoon Temperature: 75°F
Mostly cloudy.
Evening Temperature: 65°F
Cloudy with a slight chance of showers.
Friday, June 26th, 2026
Overnight Temperature: 62°F
Mostly cloudy with a chance of showers.
Morning Temperature: 64°F
A mix of cloud and sun with a chance of showers. Windy at times.
Afternoon Temperature: 73°F
A mix of cloud and sun. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 72°F
Clear with cloudy periods with showers likely. Chance of a thunderstorm. Windy at times.
Saturday, June 27th, 2026
Overnight Temperature: 70°F
Cloudy with rain. Slight chance of a thunderstorm. Windy at times.
Morning Temperature: 73°F
Mostly cloudy with periods of rain. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 78°F
A mix of sun and cloud with showers likely. Chance of a thunderstorm. Windy at times.
Evening Temperature: 72°F
Clear with cloudy periods with a chance of showers or thundershowers.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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